I have a friend who has a Nikon D40. He is trying to take pictures of his reef aquarium, but everything is coming out really blue! I've looked into this, and it seems like the problem is that he needs to adjust his "white balance," but I'm having trouble explaining it to him without being there. He tried to adjust his white balance by taping a piece of paper to the aquarium and taking a picture, and it was saying, "not enough light." What can I do to help him with this problem?
Cheers, and thanks in advance.
>>> White balance on NikonD40?